Please use this identifier to cite or link to this item:
|Title:||Inhibition of Calcium Oxalate Monohydrate by Poly(acrylic acids)s with Different End Groups||Contributor(s):||Doherty, WOS (author); Fellows, C (author) ; Gorjian, S (author); Senogles, E (author); Cheung, WH (author)||Publication Date:||2003||DOI:||10.1002/app.13349||Handle Link:||https://hdl.handle.net/1959.11/198||Abstract:||Water-soluble low molecular weight polymers are known to affect the crystal habit of scale-forming minerals and their rates of deposition. Poly(acrylic acid) (PAA) and poly(maleic acid) are commonly used to control scale formation in sugar mill evaporators. Calcium oxalate (both mono- and dihydrate) forms the bulk of the hard intractable scale found in Australian sugar mills, causing efficiency losses of significant economic importance. In this work, the formation of calcium oxalate monohydrate in a synthetic juice solution was investigated in the presence of PAAs of varying molecular weights and end-group functionality and a strong dependency on both of these factors was observed. Terminal functionality was controlled using three chain-transfer agents (CTA): thioethanol, thioglycolic acid, and dodecanthiol. Effectiveness of inhibition varied with CTA in the order thioethanol thioglycolic acid > dodecanthiol for all molecular weights. This suggests that polymer end groups play a role in scale inhibition. The polymers that were prepared with dodecanthiol accelerated rather than inhibited calcium oxalate formation, implying a different mode of action on calcium oxalate crystallization. Consistent with previous reports for other scales, the calcium oxalate inhibition tests show optimum effectiveness for PAAs of molecular weight 2000-4000.||Publication Type:||Journal Article||Source of Publication:||Journal of Applied Polymer Science, 91(3), p. 2035-2041||Publisher:||John Wiley & Sons Inc||Place of Publication:||United States of America||ISSN:||0021-8995||Field of Research (FOR):||030304 Physical Chemistry of Materials||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 193
|Appears in Collections:||Journal Article|
Files in This Item:
checked on Nov 26, 2018
checked on Dec 29, 2018
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.